International Association of Certified Home Inspectors
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| HVAC Topics include heating, venting, and air conditioning. |
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#1
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I'm looking to link to an easy-to-navigate site with clear, simple examples of venting configurations, especially showing direct vents and sealed combustion.
Kenton Shepard, InterNACHI member # 04082383 Certified Master Inspector (CMI) EXPERT WITNESS Director of Green Building Director for International Development (303) 717-8940 (303) 258-8289 |
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#2
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Kenton;
If you got to burnham.com That company makes direct vent oil fied boilers,also wiel-Mclean,Utica and others. If you go on there sites check the instalation sections and you will get plenty of info. Hope this helps. Regards Len |
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#3
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Thanks Leanard, this is for a reference source, so I'm trying to stay away from company sites, hoping to find industry or non-profit sites, preferably not PDF's cause, man, I got a ton of these things to install and PDFs take so long to load and are so specific.
Sound kinda' picky don't I Kenton Shepard, InterNACHI member # 04082383 Certified Master Inspector (CMI) EXPERT WITNESS Director of Green Building Director for International Development (303) 717-8940 (303) 258-8289 |
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#4
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Kenton;
If you have a bunch of them to install they must have instructions with the units???? If not the vent kits will have them. Len Ungar CMI |
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#5
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Kenton,
Try this; http://www.highbeam.com/doc/1G1-149364474.html http://a257.g.akamaitech.net/7/257/2...0cfr431.86.htm http://a257.g.akamaitech.net/7/257/2...0cfr431.86.htm Almost everything is in PDF. Marcel Cyr Home and Commercial Property Inspections IAC2 Certified NACHI04070211 http://co.nachi.org/inachiawards Commercial Builder CertainTeed Master Shingle Applicator Shingle Technology Ouellet Associaties Inc. http://www.oaconstruction.com/ |
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#6
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Please Note:
Brian A. MacNeish is a non-member guest and is in no way affiliated with InterNACHI or its members.
Quote:
In my area, there have been two generations of "sidewall" exhaust systems for oil heating equipment: (1) In the 1992-2002 period, the furnace or boiler was still the older loose ungasketed style that depended on negative natural draft to aspirate the system combustion gases. In this period, an approved exterior wall amounted exhaust fan was connected to the appliance flue.......it essentially replaced the chimney. It was wired/timed to initiate a pre-flame purge cycle to set up good air currents through the unit and there was a 3-5 minute post flame purge cycle to fully exhaust combustion gases. (2) From 1997-8 to present, the sealed system "direct vent" or "balanced flue" systems have taken over. The appliances are now totally sealed and the oil burner fan actually serves to create the proper conditions for combustion as well as draw in outside combustion air and exhaust the combustion gases. These systems have to be 100% sealed on the positive pressure side of the burner and fire chamber or you'll have the escape of exhaust gases into the house. In Canada, there is a nationally recognized-by-code Canadian Standards Association document (CSA B-139: Installation Code for Oil Burning Equipment) that sets the requirements for the location of the exterior exhaust on buildings. It's similar to what you would've found at the Burnham site. Our distances for certain clearances are more stringent though. Last edited by Brian A. MacNeish; 8/27/07 at 10:53 AM.. |
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#7
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So... yes, direct vent systems will work with oil-fired appliances as long as they're equipped with the necessary fan. Right?
Kenton Shepard, InterNACHI member # 04082383 Certified Master Inspector (CMI) EXPERT WITNESS Director of Green Building Director for International Development (303) 717-8940 (303) 258-8289 |
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#8
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Please Note:
Brian A. MacNeish is a non-member guest and is in no way affiliated with InterNACHI or its members.
Quote:
In the direct vent systems ,there are some limitations as to how long the exhaust ducting/fluepipe can be. The one I'm more familiar with has a maximum run of 20 feet. Above that, the pipe resistance reduces flow too much. See: http://www.kerrheating.com/TechInfo/...irect_Vent.pdf |
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